Christine I checked that out and found the following information.
Some wasps eat honey bees and the honey
Best control is to maintain your colony so they are the strongest they can be so they can defend themselves and to make sure your hive box is well made and fits together tightly. Any gaps in the hive box will encourage predators to come in and make themselves at home. Using entrance reducers will also help keep wasps and other flying inscets out as well as mice.
Thanks for mentioning the wasps I knew they would rob a hive but didn't know some of them eat the bees as well.
Another problem is ants. Using a moat around the hive they can't cross , putting your hive stand legs in cans filled with motor oil if you use one with legs and sprinkling cinnamon around the hive will deter the ants.
Generally any other type of bee will try to rob your hive if there's a shortage of food. We've not had any problems with any of them so far. Which may be due to living in a rural area that provides plenty of food for everyone.